Improvement in grates



UNITED STATES PATENT EFIGE.

JOHN H. YOCUM, OF ASHLAND, PENNSYLVANIA.

IM PROVEM ENT IN GRATES.

Specification forming part of Letters Patent No. 73,767, dated January 28, 1868.

To all whom it may concern Be it known .that I, JOHN H. YOOUM, of Ashland, and county of Schuylkill, State of Pennsylvania, have invented new and useful Improvements in Fire-Grates; and l do hereby declare the following to be a full, clear, and exact description oi' the same, reference being had to the accompanying drawing, which forms part of this specification.

This invention consists in4 providing the front of the grate with one or more openings sufficiently large to perinltthe passage through the same ot' slag, stones, and other unconsumed bodies, which can be ejected from the grate through said openings by means of a plain or hooked poker, or otherwise.

The invention further consists in providing each of said openings with a shield, to insure the retention of the coal within the grate, as hereinafter explained.

Figure 1 is a front perspective view of a grate illustrating my invention. Fig. 2 is a vertical section ot' the same, the line A B, Fig. 1, indicating the plane of section. Fig. 3 is a plan, and Fig. el is a hack perspective, view ofthe same.

In the drawings, C may represent the bottom, and D the front, bars of a grate for heating or cooking purposes. E E are openings situated at the lower part of the front of the grate, and large enough to permit the passage through them of slag, stones, and other unreduced substances, which cannot, by reason of their bulk, be raked through the interstices ofthe grate. Such of the grate-bars as are intersected by the openings E E-say twoof the front and a like number of the lower onesare joined together at the points of intersection by the bars F and H. The upper bars, F, project within the grate, and form supports for the extensions G of the adjacent front gratebars, the inner surfaces of said extensions being made to slope inward from the top, as shown in Figs.2 and 3.

The bars F may be curved or arched longitudinally, and have a downward inclination from the front. They serve, in conjunction with the extensions or enlargements G of the grate-bars, to form shields or deiiectors, which prevent the coal fi om falling through the openings, by giving that portion of the graduallydescending incandescent fuel immediately behind the openings E a tendency toward thc back of the grate.

The invention is applicable, to other kinds of grates than that herein represented. It may be applied to cylindrical grates, and, in fact, to all grates having fronts or front bars. The lower grate-bars may be so arranged as to form an incline at either side of the central bars, in order to cause the ultimate deposition of the incombustible matter more directly behind the openings E E, so that the stones, clinkers, slag, or analogous substances, may be readily ejected from the grate through said Openings.

Having thus described my invention, what l claim as new herein, and desire to secure by Letters Patent, is-

1. The provision, in a grate, of one or more openings,'E, to permit the removal of slag, clinkers, stones, and other substances too large to be raked through the interstices of the gratebars, substantially as described.

2. The bars or shields F, in combination with the enlargements or extensions G, to form shields to the openings E, substantially as and for the purpose set forth.

JOHN H. YOOUM.

Witnesses:

GEO. A. MORRISON, J. E. M. BOWEN. 

